Monochromatic light from a He-Ne laser (? = 632.8 nm) is incident on a diffraction grating containing 5000 lines/cm. Determine the angle of the first-order maximum
a. 18.4°
b. 39.2°
c. 14.6°
d. 27.7°
e. 13.9°
a
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A car travels at 50.0 km/hr for 2.00 hours. It then travels an additional distance of 40.0 km in 1.00 hour. The average speed of the car for the entire trip is
A. 61.0 km/hr. B. 57.1 km/hr. C. 53.3 km/hr. D. 46.7 km/hr. E. 30.0 km/hr.
Answer the following statement(s) true (T) or false (F)
1. Ignoring spin, the possible energies of a quanton moving in one dimension are only quantized if the quanton is bound.
A rough surface for infrared waves may be polished for
A) radio waves. B) light waves. C) both of these D) neither
A wheel is rotated about a horizontal axle at a constant angular rate. Next, it is rotated in the opposite direction with the same angular rate. The acceleration at a point on the top of the wheel in the second case as compared to the acceleration in the first case:
a. is in the same direction. c. is upward. b. is in the opposite direction. d. is tangential to the wheel.